Connection interface cube



FIG. 1 is a perspective front view of the ornamental design for a connection interface cube;

FIG. 2 is a perspective back view of the ornamental design for a connection interface cube;

FIG. 3 is a perspective down view of the ornamental design for a connection interface cube;

FIG. 4 is a first side view of the ornamental design for a connection interface cube;

FIG. 5 is a second side view of the ornamental design for a connection interface cube;

FIG. 6 is a third side view of the ornamental design for a connection interface cube;

FIG. 7 is a fourth side view of the ornamental design for a connection interface cube;

FIG. 8 is a top down view of the ornamental design for a connection interface cube; and,

FIG. 9 is a bottom view of the ornamental design for a connection interface cube.

The broken lines showing portions of the connection interface cube form no part of the claimed design. 

CLAIM The ornamental design for a connection interface cube, as shown and described. 